package com.sky.service.impl;

import com.sky.dto.GoodsSalesDTO;
import com.sky.entity.Orders;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.UserMapper;
import com.sky.service.ReportService;
import com.sky.service.WorkspaceService;
import com.sky.vo.*;
import io.swagger.models.auth.In;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpResponse;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.*;
import java.util.stream.Collectors;

@Service
public class ReportServiceImpl implements ReportService {

    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private WorkspaceService workspaceService;
    @Override
    public TurnoverReportVO getTurnoverStatistics(LocalDate begin,LocalDate end) {
        List<LocalDate> dataList = new ArrayList<>();
        dataList.add(begin);
        while(end.isAfter(begin)){
            dataList.add(begin = begin.plusDays(1));
        }

        List<Double> turnoverList = new ArrayList<>();
        for(LocalDate date:dataList){
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date,LocalTime.MAX);

            Map<String, Object> map = new HashMap<>();
            map.put("begin",beginTime);
            map.put("end",endTime);
            map.put("status", Orders.COMPLETED);
            Double turnover = orderMapper.sumByMap(map);
            if(turnover==null){
                turnover = 0.0;
            }
            turnoverList.add(turnover);
        }
        return TurnoverReportVO
                .builder()
                .dateList(StringUtils.join(dataList,","))
                .turnoverList(StringUtils.join(turnoverList,","))
                .build();
    }

    @Override
    public UserReportVO getUserStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dataList = new ArrayList<>();
        dataList.add(begin);
        while(end.isAfter(begin)){
            dataList.add(begin = begin.plusDays(1));
        }

        List<Integer> newUserList = new ArrayList<>();
        List<Integer> totalUserList = new ArrayList<>();

        for(LocalDate date:dataList){
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date,LocalTime.MAX);

            Integer totalUser  = userMapper.getUserCountByCondition(null,endTime);
            Integer newUser = userMapper.getUserCountByCondition(beginTime,endTime);
            totalUserList.add(totalUser);
            newUserList.add(newUser);
        }
        return UserReportVO.builder()
                .dateList(StringUtils.join(dataList,","))
                .totalUserList(StringUtils.join(totalUserList,","))
                .newUserList(StringUtils.join(newUserList,","))
                .build();
    }

    @Override
    public OrderReportVO getOrdersStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dataList = new ArrayList<>();
        dataList.add(begin);
        while(end.isAfter(begin)){
            dataList.add(begin = begin.plusDays(1));
        }
        List<Integer> orderCountList = new ArrayList<>();
        List<Integer> validOrderCountList = new ArrayList<>();
        for(LocalDate date:dataList){
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date,LocalTime.MAX);
            Integer orderCount = orderMapper.getOrderCount(beginTime,endTime,null);
            Integer validOrderCount = orderMapper.getOrderCount(beginTime,endTime,Orders.COMPLETED);
            orderCountList.add(orderCount);
            validOrderCountList.add(validOrderCount);
        }

        //计算总共数量
        Integer totalOrderCount = orderCountList.stream().reduce(Integer::sum).get();
        Integer validOrderCount = validOrderCountList.stream().reduce(Integer::sum).get();

        Double orderCompletionRate = totalOrderCount!=0?validOrderCount.doubleValue() / totalOrderCount:0.0;

        return OrderReportVO.builder()
                .dateList(StringUtils.join(dataList,","))
                .orderCountList(StringUtils.join(orderCountList,","))
                .validOrderCountList(StringUtils.join(validOrderCountList,","))
                .totalOrderCount(totalOrderCount)
                .validOrderCount(validOrderCount)
                .build();
    }

    @Override
    public SalesTop10ReportVO getSalesTop10(LocalDate begin, LocalDate end) {
        LocalDateTime beginTime = LocalDateTime.of(begin, LocalTime.MIN);
        LocalDateTime endTime = LocalDateTime.of(end,LocalTime.MAX);
        List<GoodsSalesDTO> salesTop10 = orderMapper.getSalesTop10(beginTime,endTime);
        List<String> names = salesTop10.stream().map(GoodsSalesDTO::getName).collect(Collectors.toList());
        String nameList = StringUtils.join(names,",");
        List<Integer> numbers = salesTop10.stream().map(GoodsSalesDTO::getNumber).collect(Collectors.toList());
        String numberList = StringUtils.join(numbers,",");

        return SalesTop10ReportVO.builder()
                .nameList(nameList)
                .numberList(numberList)
                .build();
    }

    @Override
    public void exportBusinessData(HttpServletResponse response) {
        LocalDate dateBegin = LocalDate.now().minusDays(30);
        LocalDate dateEnd = LocalDate.now().minusDays(1);
        BusinessDataVO businessData = workspaceService.getBusinessData(LocalDateTime.of(dateBegin, LocalTime.MIN), LocalDateTime.of(dateEnd, LocalTime.MAX));

        try {
            XSSFWorkbook excel = new XSSFWorkbook(Objects.requireNonNull(this.getClass().getClassLoader().getResourceAsStream("template/运营数据报表模板.xlsx")));
            XSSFSheet sheet = excel.getSheet("Sheet1");

            sheet.getRow(1).getCell(1).setCellValue("时间:"+dateBegin+"至"+dateEnd);

            sheet.getRow(3).getCell(2).setCellValue(businessData.getTurnover());
            sheet.getRow(3).getCell(4).setCellValue(businessData.getOrderCompletionRate());
            sheet.getRow(3).getCell(6).setCellValue(businessData.getNewUsers());
            sheet.getRow(4).getCell(2).setCellValue(businessData.getValidOrderCount());
            sheet.getRow(4).getCell(4).setCellValue(businessData.getUnitPrice());

            for (int i = 0;i < 30;i++){
                LocalDate date = dateBegin.plusDays(i);
                BusinessDataVO businessDataVo = workspaceService.getBusinessData(LocalDateTime.of(date,LocalTime.MIN),LocalDateTime.of(date,LocalTime.MAX));

                XSSFRow row = sheet.getRow(7+i);
                row.getCell(1).setCellValue(date.toString());
                row.getCell(2).setCellValue(businessDataVo.getTurnover());
                row.getCell(3).setCellValue(businessDataVo.getValidOrderCount());
                row.getCell(4).setCellValue(businessDataVo.getOrderCompletionRate());
                row.getCell(5).setCellValue(businessDataVo.getUnitPrice());
                row.getCell(6).setCellValue(businessDataVo.getNewUsers());
            }

            ServletOutputStream out = response.getOutputStream();
            excel.write(out);

            out.close();
            excel.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }

    }

}
